The Infineon TT105N14LOF is a dual thyristor (SCR) module delivering 105A average on-state current (IT(AV)) and a 1400V repetitive peak off-state voltage (VDRM/VRRM). Built on Infineon's proven press-pack-compatible module platform, it features a low-profile housing with isolated baseplate construction for reliable thermal transfer to heatsink assemblies. This combination of high blocking voltage, robust surge current handling, and standardized module footprint makes the TT105N14LOF a trusted choice for engineers designing or maintaining medium-power industrial conversion equipment where long-term reliability under continuous operation is non-negotiable.

The TT105N14LOF is widely deployed across industrial power electronics including three-phase soft starters, AC motor drives, DC motor field controllers, resistance welding equipment, electrochemical rectifiers, and crane or hoist drive systems. Its 1400V voltage class provides the headroom required for direct connection to 690V AC bus systems with adequate margin for line transients. The module's dual thyristor configuration also suits anti-parallel and mid-point converter topologies common in reversible drive and regenerative braking applications found in steel mills, mining equipment, and large HVAC installations.

Quick Reference: TT105N14LOF

Key Features of the TT105N14LOF:

• 105A average on-state current (IT(AV)) with high surge current (ITSM) capability for robust overload handling in industrial duty cycles
• 1400V VDRM/VRRM blocking voltage providing adequate margin for 690V AC three-phase bus applications and transient suppression requirements
• Dual thyristor configuration in a single isolated-baseplate module, enabling mid-point, anti-parallel, and bridge converter topologies without external isolation
• Low thermal resistance junction-to-case (RthJC) optimized for forced-air or liquid-cooled heatsink mounting in high duty-cycle environments
• Standard module footprint with M6 power terminal and gate/cathode auxiliary connections compatible with common Infineon and equivalent mounting hardware
• Designed to Infineon's high-reliability manufacturing standards with 100% gate trigger and blocking voltage testing for traceability in critical applications

With Infineon quoting 99 weeks for new production of the TT105N14LOF, procurement teams supporting active equipment face serious exposure to unplanned downtime and schedule risk. This part's voltage class and current rating place it squarely in a segment where second-source availability is limited and field failures cannot wait two years for factory replenishment. Whether you are managing spare parts inventory for an installed base, responding to an emergency breakdown, or building buffer stock ahead of a planned maintenance shutdown, securing verified new OEM stock now is the only reliable path to continuity of operations.

ATI Accurate Technology stocks the TT105N14LOF as new OEM product and ships same-day on orders placed before 5PM EST from our Palmetto, Florida facility. We specialize in hard-to-find, long-lead-time, and obsolete power semiconductors—IGBTs, thyristors, diodes, and rectifier modules. Volume pricing is available for MRO stocking orders and project quantities. Contact our team today: 239-734-7566 | sales@igbts.us | igbts.us